# Maximum child weight for infant car seats What is the maximum child weight allowed in these infant car seats? Cybex Cloud T SensorSafe: The seat is intended for babies from 4 to 30 lbs, and Cybex says once a child exceeds the size limits the seat must no longer be used\. CYBEX Cloud T Comfort Extend Infant Car Seat with SensorSafe: Maker lists child height max 32 inches and child weight 4 to 30 lbs\. Cybex Cloud T: Rear\-facing infant seat approved for use until the baby is 30 lbs or 32 inches long\. Cybex Aton G2: The seat is rated for use from birth up to 30 lbs\. Chicco KeyFit 30: The seat is designed for infants from 4 to 30 pounds and up to 30 inches tall\. ### 1. [Cybex Cloud T SensorSafe](/products/ucp/albeebaby-com/9514709352679) (sold by albeebaby\.com) The seat is intended for babies from 4 to 30 lbs, and Cybex says once a child exceeds the size limits the seat must no longer be used\. - Weight limit: The seat is intended for babies from 4 to 30 lbs, and Cybex says once a child exceeds the size limits the seat must no longer be used\. (listing) - Height limit: Cybex's infant car seat category, which the Cloud T belongs to, is for 4 to 30 lbs, up to 32 inches and about 0 to 18 months\. (guide) - Age range: Cybex's infant car seat category, which the Cloud T belongs to, is for 4 to 30 lbs, up to 32 inches and about 0 to 18 months\. (guide) - Warranty: The seat carries a 2\-year warranty\. (listing) ### 2. [CYBEX Cloud T Comfort Extend Infant Car Seat with SensorSafe](/products/ucp/strolleria-com/7711193563210) (sold by strolleria\.com) Maker lists child height max 32 inches and child weight 4 to 30 lbs\. - Weight limit: Maker lists child height max 32 inches and child weight 4 to 30 lbs\. (guide) - Height limit: Maker lists child height max 32 inches and child weight 4 to 30 lbs\. (guide) - Age range: Maker lists age range from newborn up to about 18 months\. (guide) - Warranty: Warranty period is 2 years\. (guide) ### 3. [Cybex Cloud T](/products/ucp/albeebaby-com/9514709385447) (sold by albeebaby\.com) Rear\-facing infant seat approved for use until the baby is 30 lbs or 32 inches long\. - Weight limit: Suitable for babies from 4 to 30 lbs\. (listing) - Height limit: The maker's infant car seats are rated from 4 to 30 lbs, up to 32 inches and from birth to about 18 months\. (guide) - Age range: The maker describes the Cloud T as covering from day one to 18 months with near\-flat recline, all\-round ventilation, Linear Side\-impact Protection and SensorSafe alerts\. (guide) - Warranty: - ### 4. [Cybex Aton G2](/products/ucp/albeebaby-com/9722103628007) (sold by albeebaby\.com) The seat is rated for use from birth up to 30 lbs\. - Weight limit: The seat is rated for use from birth up to 30 lbs\. (listing) - Height limit: The maximum child height is 32 in\. (guide) - Age range: The seat is intended for newborns up to about 18 months\. (guide) - Warranty: - ### 5. [Chicco KeyFit 30](/products/ucp/albeebaby-com/9564462776551) (sold by albeebaby\.com) The seat is designed for infants from 4 to 30 pounds and up to 30 inches tall\. - Weight limit: The seat is designed for infants from 4 to 30 pounds and up to 30 inches tall\. (listing) - Height limit: The seat is designed for infants from 4 to 30 pounds and up to 30 inches tall\. (listing) - Age range: - - Warranty: - ## Also cited in the text - Cybex Cloud T, weight and height limits: Rear\-facing infant seat approved for use until the baby is 30 lbs or 32 inches long\. (blog) Every value in the table is a fact RoboTrunk checked, linked to the page it came from\. A dash means no checked fact fills that cell\. Prices and stock change, so this page prints neither: each product name links to its RoboTrunk page, which shows them live\. Written 2026-10-13T15:29:56.793Z. This page is published by RoboTrunk, a store built for shopping agents. The store named on this page sells the product and ships it. RoboTrunk is not the seller and never holds the money. Buying works in one path. RoboTrunk's tools prepare a checkout at that store, then hand back a short-lived link. 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